Carbureting apparatus



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, A atraen rarita carrie.

WIIFOBD d'. EAW'KINS, OF BRQOKLYN, NEW YORK, SSIGNOR T0 AMERICAN MACHINAND FOUNDRY COMPANY, A COREORATION F NEW JERSEY.

CABBURETING APABTUS.

Application filed. February 29, 1924. Serial No. 695,908.

To all whom t may com-emi Be it known that LWILFORD ".l. HAWKrNs, acitizen of the United States, residing at Brooklyn, county of 'Kings andState of New York, have invented a new and useful Improvement inCarburetingv Apparatus,

v tion of a simplified carbureting apparatus that; is inexpensive to'build' and install, automatic in action, compact, highly eiiicient, andinexpensive tomaintain inoperation. With this and other objects notspecifically mentioned in view, the inven- ,tion' consists in certainconstructions andl combinations which will be hereinafter fullydescribed and then specifically set forth in the claims hereuntoappended.

In the accompanying drawmgs, which form a part of this specification andin which like characters of reference indicate .the same or like parts',Fig. 1 is a centrall sectional view of an apparatus constructed inaccordance with the invention; Fig. 2 is a fragmentary sectional viewtaken" in a plane which includes the oil inflow valve 19; and Fig. 3 isan enlarged detail view of the venturi and needle valve shown in Fig. 1.y y

In carrying the invention into effect, there is prov`ded a source offuel oil supply. There islfurther provided a carburetor receiving oilfrom said source, and air from the atmosphere, and mixing the two. And

`there is further provided a pump actuating said carburetor andreceiving the air and oil mixturev `therefrom and delivering Yit,

When the apparatus is under pressure. used in an oil burning system,there is further provided a burner,.receiving the mixture under pressurefrom the pump; and means for igniting the mixture. When the. source offuel oil supply is buried in the ground, or otherwise located i at alevel lower than that of the carburetor, the said source of supplyincludes a vacuum tank connected with the main supply tank, and meansactuated by the pum for producing the necessary vacuum. An means areprovided for varying the pressure lform and size of t above mentionedparts and means may be widely varied in construction within the scope ofthe claims, for the particular apparatus selected to illustrate theinvention `is but one of many possible concrete embodiments of the same.The invention therefore is not to be restricted to the precise detailsof the structure shown and described.

The drawings illustrate an embodiment of the invention adapted for useas an oil burner; and in this embodiment there is provided a source offuel oil sup ly including asupply tank 4 of any sultable constructionand capacity. This supply tank 4 is connected, by means of a pipe 5,with a vacuum tank 6, of the well known'Stewart type and located at ahigher, level. |There is also provided a carburetor indicated generallyby `the reference character 7, and, as`

shown, this carburetor is inbuilt with a pump 8 which is'of thehih-speed rotary type and directly driven y an electric motor not shown.The carburetorv has a ioat chamber 9 in which is located a oat 10 havingupwardly projecting lugs 11 (only one being shown) pivoted to arms 13and 14, both fulcrumed on a pin 15, carried by a depending lug 16,formed on a cover` 17, which closes the upper end of the oat chamber 9.It may be hereremarked that this cover 17 removably supports all of thevmovable carburetor parts within the -float chamber 9. The free ends ofthe arms 13 and 14 have a slot and pin engagement 18 with a valve 19adapted to control the gravity iow of oil through a pipe, 20 from. the

vacuum tank' 6 to the float chamber 9. It will be readily understoodthat the valve will close when the float rises, and will open when thefloat falls.

A conduit 21 leads from the upper part of the float chamber 9 to thepump 8 on the suction side of the latter at 22. The upper end of theconduit 21- terminates in the stationary part of a venturi 23 locatedwithin the hfloat chamber 9. Coacting with the stationary part of theventuri is an` adjusting tube 24. This tube is threaded at 25 throughthe top of the cover 17. lt may be adjusted vertically in order to varythe e air passage in the venturi 23. lt is held in adjusted position byand quan-*means of a lock nut .26 of well known contity of the deliveredmixture. Ail of' thestruction and operation. Threaded into the Bic jthereby ignited.

upper part of the tube 24 is a needle valve 27 which is adjustable inthe tube by means of the thread. It is locked in adjusted position bymeans of a lock nut 28. The operating end of the needle valve 27 engagesa bush 29, driven into the bore of the tube 24. Just above the top ofthe bush 29 small holes 30 are drilled from the bore of the tube 24 tothe interior of the venturi 23. The lower part of the tube 24 is openand is submerged in the fuel oil in the float chamber. v

The carburetor is provided with a restricted air intake 31 in opencommunication with the atmosphere `and with the interior of the floatchamber 9. A suction pipe 32 is in communication With the vacuum tank 6and with the conduit 21; and this pipe is rovided with a valve 33, forcontrolling its effective action.

A conduit 34 leads from the pressure side of the pump 8, to and throughthe cover 117, to establish connection with a pipe 35 leading to a.burner 36. This burner 36 is provided with a screen 37 to preventbackfire, and it has a small delivery orifice 38. Just beyond the burner36 is located an incandescent ignition device indicated diagrammaticallyat 39.

For the purpose of varying the pressure of the delivered mixture andcontrolling the quantity of oil used during any given time interval,there is provided a by-pass pipe 40v having therein a valve 41. One endof this by-pass pipe is open to the suction pipe 32; the other is opento the delivery pipe 35; the valve controls its action.

4The operation ofthe apparatus is as follows: When the pump is started,air is drawn from the float chamber 9, through the venturi 23 andconduit 21', to the pump -Whichdischarges it into the conduit 34. Airthen flows into the float chamber 9 through the intake 31. If there isno vacuum in the vacuum tank 6 when the pump is started, the air flowiinto the fioat chamber comes in part from t e atmosphere through theintake 31 and in part from the vacuum tank through the pipe connection32. After a vacuum is established in the vacuum tank 6, however, all theair will come through the intake 31. The needle valve 27 and adjustableVenturi tube 24 being properly set, and the lower ends of the tube 24being submerged in the oil in the float chamber; the passage of airthrough the venturi 23 picks up atomized oil in the usual manner, andthe mixture is drawn down through the conduit 21. causes pressure of themixture to build up in the conduit 34 and pipe 35. At theproper time theignition device is switched on, and the mixture iuing from the orifice38 is The restricted orifice of the burner 36 f It will be readilyunder-` stood that when a vacuum is established inthe vacuum tank 6, oilrwill flow from the sup-ply tank 4, through the. pipe, 5 to the vacuumtank 6; and that thereafter the vacuum tank float will automaticallycontrol the oil How in the usual manner. So long as fuel oil isavailable in the supply tank 4, therefore, the apparatus will operateautomatically. The location of all of the moving parts within the pumpand carburetor housing, Where they Work in an 011 mlxture, makes theWholev apparatus self-lubricating.

When it is desired to lower the pressure of p p the mixture to lessenthe quantity delivered, the valve 41 is opened slightly. The partialvacuum inthe suction pipe 32 and the pressure of the" mixture in thepipe 35 then coact te' set up a circulation, through the by-pass andpump, of a. part of the elivered mixture; and this lowers its pressureand reduces the quantity delivered in any given time interval.

What is claimed is 1. A carbureting apparatus comprising a source offuel supply including a vacuum tank, a carburetor receiving oil fromsaid source., and a pump actuating said tank and said carburetor andreceiving mixture therefrom and delivering it under pressure.

2. A carbureting apparatus com rising a source of fuel oil supply incluing a vacuum tank, a carburetor receiving oil from said source, and apump actuating said tank and said carburetor and receiving mixturetherefrom and delivering it ander pressure, and a burner receiving saidmixture under ressure.

3. A carburetmg apparatus comprising a source of fuel oil supplyincluding a vacuum` tank, a carburetor receiving oil from said source,andl a pump actuating said tank and said carburetor and receivingmixture therefrom land delivering it under pressure, a burner receivingsaid mixture under pressure, and means for igniting said mixture.

4. A carbureting apparatus comprising 'a source of fuel oil supplyincluding a vacuum tank, a carburetor recelving oil from said source,and a pump actuating said tank and said carburetor mixture therefrom anddeliverin pressure, a burner receiving sai under pressure, backfire.

it under mixture and means for preventing llo and receiving 5. Acarbureting .apparatusy comprising a. source offuel oil supply includinga vacuum tank, a carbureter receiving oil from sald source, and a pumpactuating said tank and said carburetonand receiving mixture therefromand delivering it under pressure, said `source including a supplyr tankand a vacuum tank connected there- `With and means actuated by said pumpfor operating said vacuum tank.

6. A carbureting apparatus comprising fantasie a source of fuel oilsupply including a vacuum tank, a' carburetor receiving oil from saidsource, and VAa pump actuating said tank and said carburetorand receiving mixture.. therefrom and delivering it under pressure, said4 sourceincluding a supply tank and a vacuum tank connected therewith andAvalve-controlled connections actuatedfby said vpump for operating said`vacuum tank.

7. A; carbureting apparatus comprising a source of fuel' 4oil supplyincluding a vacuum tank, a carburetor receiving oil from said source,and a pump actuating said' tank and. said carburetor-.and receivingvmixture.therefrom and delivering it pressure, said carburetor havingmeans forl maintaining a. substantially vconstant supply of oiltherein.` I

9. A' carbureting apparatus comprising ha' source of fuel oil supply"including, a vacuum tank, a carburetor receiving oil from' said. source,and apump actuating said'tank and said carburetor and receiving mixturetherefrom and.- delivering it under pressure, said carburetonhaving'f a'ioat chamber. and a venturi therein.

10.A A 'carbureting apparatus? comprising a source. of fuel oilI supplyincluding a lvacuum tank,l a carburetor receiving'l oil from vsaid.'s'ource, and a pump actuating said'tank and said carburetor 'andreceiving mixture therefromand delivering it under pressure, saidcarburetor haa floatA cl'iaiiiber and an' adjustable venturi therein.11. A carburetingapparatus comprising a lsource of fuel oil 'supplyincluding a vacuumtank, a carbureter receiving oil from said source,andi a pump actuating said tank, .and said carburetor and. receivingmixture therefrom and deliveringit under pressure, said carburetorhaving a float chamber and an adjustable -venturitherein and anadjustable needle valve coacting with said venturi.

a -source of fuel o il supplyv including a vacuum tank, a carburetorreceiving oil from saidsource, and a pumpv actuating under-pressure,saidpumpbeing of thehigli-v under pressure, tion device.

saidtank-and said carburetor and receivf ing mixture therefromv anddelivering it speed rotary type. t

13; A carbureting apparatus vcomprising a source of fuel oil supplyincluding a' vacuum. tank, a: carburetor receiving oil from said source,anda pump actuating -said tank and said carburetor and receiving mixturetherefromand delivering it under pressure, la burnerreceiving saidmixture and an' incandescent igni- 14. A carbureting apparatuscomprising a source of fuel oil supply'v including a vacuum tank, a-carburetor receiving oil from said source, and. a pump actuating` saidvtank' and' said carburetor and receiv; ing mixture therefrom anddelivering it under pressure, and a housing for said pump and carburetorforming a float chamber for thejlatter and having a cover re movablysupporting all the partsof the carburetor within said-chamber.

- 15.` A carbureting apparatus comprising a source of fueloil supplyincluding a vacuum tank', a carburetor' receivingvoil from said source,and a' pump' actuating said tank and said. oarburetorand receivingmixture. therefrom and delivering it under pressure, and a housing forsaid pump and carbure` tor forming a oat chamber for the latter abovesaid pump and having acover removablyv supporting allthe parts'of saidcarburetorvwithin said chamber and alsohaving aconduit leading from theupper'part of said lchamber to Asaid pump.

16. A carbureting apparatus comrising 95 a source of fuel oil 'supplyinclug a '1 vacuum tank, a carburetor' receiving oil from said source,and. a', pump actuating v said tank and said carburetor and receiv-`4ing lmixture therefrom' and 'delivering it' 100 under pressure, andmeans for varying the pressure of the delivered mixture.

17. A carbureting apparatus comprising a source vof' .fuel oil supply'including a vacuum tank, a carbureter receiving oil 305 fromsaidsource, and l'a pump actuating. said tank and said carburetor andreceiving mixture therefrom and delivering 1t under pressure, and avalve-controlled-by-pass for varying the pressure of -the delivered mixM0' 12. Av -carbureting apparatus comprising WILFRD J. HAWKNS.

